Oil-guard for sewing-machines.



No. 687,438. Patented Nov. 26, I901.

12. c. RICHARDSON. OIL GUARD-FOR SEWING MACHINES.

(Applicafion filed Aug. 1, 1901.!

(No Model.)

5252 21555 E5. jrp/ezfiar.

UNITED STATES PATENT OIL-GUARD FOR SEWlNG-MACHENES.

SPECIFICATION forming part of Letters Patent No. 687,488, dated Never-.1er 26, 190i.

Application filed August 1, 1901. Serial No. 70,502. (No model.)

To Ml whom it may 001mm: 3 Be it known that I, CHARLES C. RICHARD- SON,a citlzen of the UnitedStates, residing at Worcester, in the county ofWorcester and ing thrown off by the s'wift-ru nnin g wheel andspatt'ering upon the tables, work, or clothing of the operators, also toprovide a protectingguard for the purpose specified having means forcollecting the escaping oil and diverting the same to the interior ofthe arm or frame, where it can be deposited in the-usual drippan or inother suitable receptacle beneath the sewing-machine. These objects Iattain by the mechanism illustrated in the drawings, wherein- Figure 1represents an elevation view of the inner side of the balance-wheelhaving the flaring barrier-rim attached thereto. Fig. 2 is alongitudinal central section of mechanism embodying my invention. Fig. 3is an end view, and Fig. & a side view, showing the collector or guardring and its support separate from other parts. Fig. 5 is a back view,and Fig. 6 a side view, of the bell-shaped barrier-rim separate fromother parts; and Fig. 7 illustrates a modification in the form ofbarrier-rim.

Myinvention consists in an oil-guard mechanism for sewing-machinescomprising a liaring or bell-shaped barrier-rim tightly fixed in or uponthe nave or hub at the inner end face of the balance-wheel andprojecting therefrom to cover the joint and surround the end of theshaft-bearing where the operating-shaft is journaled in the arm or frameof the machine, and, combined with said flaring barrier-rim, ahollow-shaped annular guard or internallychambered collector-ring thatsurrounds the said rim and bearingand is disposed in a manner to receivethe oil that is thrown or drips from the peripheral edge of saidbarrier-rim. The collector or guard ring is provided with a spout ortube at its lower part, leading therefrom through an opening in thesewing-machine arm and from which the oil can drip within the interiorof the frame into the pan usually arranged beneath the machine.

Referring to the draw-i11gs,the part marked A represents a portion ofthe arm or upper frame of a sewing-machine of ordinary wellknownconstruction-as, for instance, a Singer manufacturers machine.

B indicates the balance and band wheel, having the hub mounted on theoperating shaft C, which latter turns in the bearing a, formed as aprojecting part of the frame A, all in well-known manner. The end of thehub runs adjacent to the end of the bearing.

D indicates a circular barrier or bell-shaped rim having its smaller endsecurely attached to the inner end of the band-wheel hub with a close ornon-leakable joint. Said rim projects over the end of the bearing awithout contact therewith, its lip e standing out some distance from thebearing. Said rim is preferably struck up by aid of dies from sheetmetal and formed with a shoulder 3 and neck a, that is driven tightlyonto or into a receiving-shoulder formed in or upon the hub of the wheelconcentric with the axis.

F indicates the internally-chambered oilcollecting annulus orguard-ring, formed of sufficient internal diameter and breadth tosurround and inclose the edge of the rim D and adapted to stand adjacentthereto, but without contact therewith at any part. Said ring F issupported in position between the frame A and wheel B in suitable mannerfor retaining it in concentric relation to the shaft and rim andnormally stationary by connecting with the frame. in the presentinstance and preferably the sup port consists of a spring plate or armG, connected to the ring and having its lower part secured to the frameat a convenient position below the line of the wheel B by a screw orbolt 71, as indicated in The guard-ring F is best formed of sheetmetal,diedrawn into the required shape, with inwardly-turned lips on theedges, as shown. The diameter of opening through the front lip 5 of thering F is greater than the diameter of the rim D; but the openingthrough the other lip 6 may be of less diameter than the end of thebarrier-rim D, the better to prevent spattering toward the frame. At thelower part of the ring I arrange an inclined tube or spout I, leading tothe interior of the frame A (see Fig. 2) through a hole therein. Thecollected oil can pass from the interior of the ringFand drip into thepan (not shown) beneath the sewing-machine or to any suitable receptacleinto which the tube may be led. In the preferred arrangement of theparts the oil-hole m in the bearing a is covered by the ring F when atits normal position; but by reason of the spring action of the support Gthe ring can be pressed forward sufficiently to facilitate oiling insaid hole m, and the ring returns to normal position when the pressureis relieved.

In some instances the rim D may be made, as shown in Fig. 7, with acurled-in lip e and provided with holes 72 for the delivery of the oilto the guard-ring in lieu of a straight lip, as e.

In the operation any oil escaping from the bearing end is caused to flowon the inner surface of the flared rim and to pass from the edge 6thereof, Whether the Wheel is running or idle, into the annular chamberof the guard-ring F, and thence flows to the interior of the frame orarm A, so that no oil is spattered about the exterior or thrown from themachine to injure work and clothing.

These oil-guards can be applied to sewingmachines now in use Withoutaltering the machines and at comparatively little cost and labor.

WVhatI claim as of myinvention, and desire to secure by Letters Patent,is-

1. An oil-guard mechanism for the purpose set forth, comprising acircular barrier-rim having a cylindrical attaching-neck, for its tightconnection to the band-wheel, and revoluble with the band-wheel andshaft, a stationary, internally chambered annulus or guard-ringpresenting an inwardly-open groove or channel, with inclosing lips,surrounding the outer edge of said barrier-rim adjacent to but not incontact therewith, a drip-tube leading from the channel of saidguard-ring, and an arm attached to and adapted for supporting saidguard-ring in connection With a sewing-machine frame.

2. The combination with the frame-arm having the projectingshaft-bearing, the 0perating-shaft, and the balance or band wheel in asewing-machine; of the bell-shaped or fiarin g barrier-rim rigidly fixedto said wheel, and projecting from the hub, over the hearing concentricwith the axis, an internallychanneled guard-ring surrounding thedelivery edge of said barrier-rim, a tubular exit from the channel ofsaid guard-ring leading into the interior of the arm, and a bracket orear-plate supporting said guard-ring in connection with the frame.

3. The combination, with the machineframe having the projecting bearingwith the oiling-hole therein, the operating-shaft rotatable in saidbearing, and the wheel mounted on said shaft adjacent to the bearing;ofa barrier or deflecting rim carried on the end of the Wheel andextending over said bearing, an internally-chambered oil-collectingannulus surrounding said rim and bearing, and a yieldable resilientsupporter attaching said annulus to the frame, and permitting resilientdisplacement thereof to afford access to the oiling-hole.

fitness my hand this 31st day of July, 1901.

CHARLES C. RICHARDSON.

Witnesses:

CHAS. II. BURLEIGH, CHARLES S. BACON.

